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Diffstat (limited to 'src/credential/credential_misc.c')
-rw-r--r-- | src/credential/credential_misc.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/src/credential/credential_misc.c b/src/credential/credential_misc.c deleted file mode 100644 index 13435273e..000000000 --- a/src/credential/credential_misc.c +++ /dev/null | |||
@@ -1,176 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2009-2013, 2016 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | |||
21 | |||
22 | /** | ||
23 | * @file credential/credential_misc.c | ||
24 | * @brief Misc API for credentials | ||
25 | * | ||
26 | * @author Martin Schanzenbach | ||
27 | */ | ||
28 | #include "platform.h" | ||
29 | #include "gnunet_util_lib.h" | ||
30 | #include "gnunet_constants.h" | ||
31 | #include "gnunet_credential_service.h" | ||
32 | #include "gnunet_signatures.h" | ||
33 | #include "credential.h" | ||
34 | #include <inttypes.h> | ||
35 | |||
36 | char* | ||
37 | GNUNET_CREDENTIAL_credential_to_string (const struct | ||
38 | GNUNET_CREDENTIAL_Credential *cred) | ||
39 | { | ||
40 | char *cred_str; | ||
41 | char *subject_pkey; | ||
42 | char *issuer_pkey; | ||
43 | char *signature; | ||
44 | |||
45 | |||
46 | subject_pkey = GNUNET_CRYPTO_ecdsa_public_key_to_string (&cred->subject_key); | ||
47 | issuer_pkey = GNUNET_CRYPTO_ecdsa_public_key_to_string (&cred->issuer_key); | ||
48 | GNUNET_STRINGS_base64_encode ((char*) &cred->signature, | ||
49 | sizeof(struct GNUNET_CRYPTO_EcdsaSignature), | ||
50 | &signature); | ||
51 | GNUNET_asprintf (&cred_str, | ||
52 | "%s.%s -> %s | %s | %" SCNu64, | ||
53 | issuer_pkey, | ||
54 | cred->issuer_attribute, | ||
55 | subject_pkey, | ||
56 | signature, | ||
57 | cred->expiration.abs_value_us); | ||
58 | GNUNET_free (subject_pkey); | ||
59 | GNUNET_free (issuer_pkey); | ||
60 | GNUNET_free (signature); | ||
61 | return cred_str; | ||
62 | } | ||
63 | |||
64 | struct GNUNET_CREDENTIAL_Credential* | ||
65 | GNUNET_CREDENTIAL_credential_from_string (const char*s) | ||
66 | { | ||
67 | struct GNUNET_CREDENTIAL_Credential *cred; | ||
68 | size_t enclen = (sizeof(struct GNUNET_CRYPTO_EcdsaPublicKey)) * 8; | ||
69 | |||
70 | if (enclen % 5 > 0) | ||
71 | enclen += 5 - enclen % 5; | ||
72 | enclen /= 5; /* 260/5 = 52 */ | ||
73 | char subject_pkey[enclen + 1]; | ||
74 | char issuer_pkey[enclen + 1]; | ||
75 | char name[253 + 1]; | ||
76 | char signature[256]; // TODO max payload size | ||
77 | |||
78 | struct GNUNET_CRYPTO_EcdsaSignature *sig; | ||
79 | struct GNUNET_TIME_Absolute etime_abs; | ||
80 | |||
81 | if (5 != sscanf (s, | ||
82 | "%52s.%253s -> %52s | %s | %" SCNu64, | ||
83 | issuer_pkey, | ||
84 | name, | ||
85 | subject_pkey, | ||
86 | signature, | ||
87 | &etime_abs.abs_value_us)) | ||
88 | { | ||
89 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
90 | _ ("Unable to parse CRED record string `%s'\n"), | ||
91 | s); | ||
92 | return NULL; | ||
93 | } | ||
94 | cred = GNUNET_malloc (sizeof(struct GNUNET_CREDENTIAL_Credential) + strlen ( | ||
95 | name) + 1); | ||
96 | GNUNET_CRYPTO_ecdsa_public_key_from_string (subject_pkey, | ||
97 | strlen (subject_pkey), | ||
98 | &cred->subject_key); | ||
99 | GNUNET_CRYPTO_ecdsa_public_key_from_string (issuer_pkey, | ||
100 | strlen (issuer_pkey), | ||
101 | &cred->issuer_key); | ||
102 | GNUNET_assert (sizeof(struct GNUNET_CRYPTO_EcdsaSignature) == | ||
103 | GNUNET_STRINGS_base64_decode (signature, | ||
104 | strlen ( | ||
105 | signature), | ||
106 | ( | ||
107 | char**) &sig)); | ||
108 | cred->signature = *sig; | ||
109 | cred->expiration = etime_abs; | ||
110 | GNUNET_free (sig); | ||
111 | GNUNET_memcpy (&cred[1], | ||
112 | name, | ||
113 | strlen (name) + 1); | ||
114 | cred->issuer_attribute_len = strlen ((char*) &cred[1]); | ||
115 | cred->issuer_attribute = (char*) &cred[1]; | ||
116 | return cred; | ||
117 | } | ||
118 | |||
119 | /** | ||
120 | * Issue an attribute to a subject | ||
121 | * | ||
122 | * @param issuer the ego that should be used to issue the attribute | ||
123 | * @param subject the subject of the attribute | ||
124 | * @param attribute the name of the attribute | ||
125 | * @return handle to the queued request | ||
126 | */ | ||
127 | struct GNUNET_CREDENTIAL_Credential * | ||
128 | GNUNET_CREDENTIAL_credential_issue (const struct | ||
129 | GNUNET_CRYPTO_EcdsaPrivateKey *issuer, | ||
130 | struct GNUNET_CRYPTO_EcdsaPublicKey *subject, | ||
131 | const char *attribute, | ||
132 | struct GNUNET_TIME_Absolute *expiration) | ||
133 | { | ||
134 | struct CredentialEntry *crd; | ||
135 | struct GNUNET_CREDENTIAL_Credential *cred; | ||
136 | size_t size; | ||
137 | |||
138 | size = sizeof(struct CredentialEntry) + strlen (attribute) + 1; | ||
139 | crd = GNUNET_malloc (size); | ||
140 | cred = GNUNET_malloc (sizeof(struct GNUNET_CREDENTIAL_Credential) + strlen ( | ||
141 | attribute) + 1); | ||
142 | crd->purpose.size = htonl (size - sizeof(struct | ||
143 | GNUNET_CRYPTO_EcdsaSignature)); | ||
144 | |||
145 | crd->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_CREDENTIAL); | ||
146 | GNUNET_CRYPTO_ecdsa_key_get_public (issuer, | ||
147 | &crd->issuer_key); | ||
148 | crd->subject_key = *subject; | ||
149 | crd->expiration = GNUNET_htonll (expiration->abs_value_us); | ||
150 | crd->issuer_attribute_len = htonl (strlen (attribute) + 1); | ||
151 | GNUNET_memcpy ((char*) &crd[1], | ||
152 | attribute, | ||
153 | strlen (attribute) + 1); | ||
154 | if (GNUNET_OK != | ||
155 | GNUNET_CRYPTO_ecdsa_sign (issuer, | ||
156 | &crd->purpose, | ||
157 | &crd->signature)) | ||
158 | { | ||
159 | GNUNET_break (0); | ||
160 | GNUNET_free (crd); | ||
161 | GNUNET_free (cred); | ||
162 | return NULL; | ||
163 | } | ||
164 | cred->signature = crd->signature; | ||
165 | cred->expiration = *expiration; | ||
166 | GNUNET_CRYPTO_ecdsa_key_get_public (issuer, | ||
167 | &cred->issuer_key); | ||
168 | |||
169 | cred->subject_key = *subject; | ||
170 | GNUNET_memcpy (&cred[1], | ||
171 | attribute, | ||
172 | strlen (attribute) + 1); | ||
173 | cred->issuer_attribute = (char*) &cred[1]; | ||
174 | GNUNET_free (crd); | ||
175 | return cred; | ||
176 | } | ||